Double twist spindle



March F E v DOUBLE TWIST SPINDLE Filed July 8, 1964 4 Shets$heet 1 Fig.7

. Jnventar M 7" K;

March 28, 1937 EN DOUBLE TWIST SPINDLE Filed July 8, 1964 '4 SheetsQSheei 2 March 8, G. FRANZEN DOUBLE TWIST SPINDLE 4 Sheets-Sheei Filed July 8, 1964 March 2 1%? FRANZEN DOUBLE TWIST SPINDLE I 4 Sheets-Sheet 4,

Filed July 8, 1964 17m venor United States Patent 3,310,934 DOUBLE TWIST SPINDLE Gustav Franzen, Neersen, Germany, assignor, by mesne assignments, to Palitex Project-Company, G.m.b.H., Krefeld, Germany, a company of Germany Filed July 8, 1964, Ser. No. 381,014 Claims priority, application Germany, July 13, 1963, N 23,460 9 Claims. (Cl. 57-5834) The invention relates to a double twist spindle which is provided with a revolving plate which may be of dish form. As known, the said plate in such a double twist spindle participates in the rotation and carries in suitable manner a gathering or storage disc or ring which is provided with a radial outlet for the yarn. In conventional twist spindles the channel through which the yarn is conducted to the outlet hole is integral with the said plate and the said disc.

Contrary to this classical form of construction of a double twist spindle the invention proposes to provide a bearing sleeve with a flat or mushroom shaped head. The top of this head is stationary and forms the bottom of the channel for the yarn. This arrangement permits the revolving plate and the gathering disc, e.g., in the form of a ring to be constructed substantially without a bottom, the latter being formed by the head of the hearing sleeve. The yarn channel to the yarn outlet therefore has a wall portion which rotates with the said plate and another wall portion which is stationary.

The presence of the stationary head permits a number of advantageous features to be provided.

The gathering disc may be formed with or as a flange which co-operates with an expanding brake on the stationary head. This brake will then in a very advantageous manner provide a large braking surface directly where the inertial forces are greatest.

Moreover, holes may be provided in the stationary head through which steam, wetting agents or the like can be introduced into the channel for the yarn. Alternatively, the holes may be utilised for generating suction or pressure effects, such as may be useful in operation and/ or for cleaning the spindle. Furthermore, holes may be provided in the stationary head which enter the yarn channel to create an injector-like effect. Through the holes compressed air may be blown into the channels with the generation of such an injector effect. This may be conveniently utilised for threading the yarn. Moreover, a slidably movable pin may be provided in the stationary head in such manner that the end of the pin can be pushed into the yarn channel in the spindle plate. If such a pin is controlled by a stop motion or yarn guard the yarn can be gripped or cut when the thread has broken and the further withdrawal of yarn from the supply package by the action of centrifugal forces prevented where these forces arise.

The arrangement according to the invention provides a spindle of simpler construction which in operation uses less power because the stationary head does not create air friction.

The drawings show by way of example several illustrative embodiments of the invention.

FIG. 1 is a vertical axial section of one embodiment,

FIG. 2 is a similar view of another embodiment, and

FIG. 3 is a sectional plan view thereof;

FIG. 4 is a vertical axial section of a further embodiment, and

FIG. 5 is a similar view of yet another embodiment.

In the usual manner the double twist spindle, which is only partly shown in FIG. 1, comprises an annular dished revolving plate 1 which is integral with a gather- 3,31%,934 Patented Mar. 28, 1967 ing (storage) disc 2. Plate 1is affixed to the upper part 3 of the spindle which is mounted on a shaft 6 running in bearings 4 and 5. A tube 7 is provided for the yarn and the yarn runs therefrom through a channel to the radial outlet 8 from the gathering disc 2.

According to the invention a channel 9 for the yarn is formed by the plate and disc and by the mushroomshaped head 10 of a bearing sleeve 11 the said head forming the bottom of the channel. This bearing sleeve 11 is attached to the frame 13 as indicated at 12. Some alternative means of attachment could, of course, be provided.

As a result of the proposed arrangement the gap 14 between the stationary head 11 of sleeve 11 and the inner edge of the gathering disc or ring 2 is fairly far outwards, a feature which has a favourable effect from the point of view of minimising the air drag.

FIG. 2 substantially agrees with the embodiment shown in FIG. 1. The gathering disc 2 is provided with a fiange 15 which co-operates with an internal expanding brake 16 (cf. FIG. 3) mounted on the stationary mushroom head 10. The expanding brake may be of conventional design. It is operable by lever 17. When actuated the shoes act on the flange 15 which is located in the region of the major revolving mass. Consequently the braking surface is particularly large and the braking effect very satisfactory.

Holes 18 are provided in the mushroom-shaped head 10. These holes are preferably disposed as in a circular sprayer head. The holes communicate with the cavity 19 inside head 10 and this cavity 19 itself communicates through opening 20 with a channel 21 and a container or the like, not specially shown, from which steam, wetting agents or the like can be introduced into channel 9. The result of this arrangement is that a suction effect is generated in holes 18 so that the said agents are automatically drawn into the channel. Alternatively, the holes 18 may be connected to suction or pressure pipes for generating suction or pressure effects inside the spindle.

Moreover, a pin 22, guided in head 10, may be provided. This pin 22 can be moved into the yarn channel 9. In order to permit the pin 22 to be advanced into a recess 23 in the yarn channel 9 an annular groove 24 must be provided.

Conveniently, the upper end of pin 22 is knife-edged for reliably severing the yarn. Since the pin 22 is light and is moved without a lever transmission it can be readily controlled by a stop motion. It may be advisable to provide two such pins for severing the yarn, one in the neighborhood of tube 7 and one in the neighborhood of the gathering disc.

The embodiment in FIG. 4 corresponds to that in FIG. 1, excepting that a duct 25 which points towards the spindle axis enters the yarn channel 9 to provide an injector effect. The duct communicates through a channel 27 with a pressure pipe. This arrangement permits the end of a thread placed into the outlet to be threaded through the channel into tube 7.

The same remarks apply to the embodiment in FIG. 5 as in FIG. 4. However, the injector duct 25 here points outwards, so that the thread is sucked through tube 7 from below.

What I claim is:

1. A double twist spindle comprising in combination a revolvable plate and a gathering disc carried by the said plate and having a radial outlet for the yarn, and comprising a bearing sleeve with a stationary head forming with the revolvable plate and disc a yarn passage, the upper surface of said head forming the bottom of the said yarn passage.

2. A spindle according to claim 1, in which the said head is of mushroom shape.

3. A spindle according to claim 1, the said gathering disc having a flange and the said head having a co-operating expanding brake.

4. A spindle according to claim 1, in which said stationary head further comprises holes communicating with means permitting a fluid medium to pass through the said holes.

5. A spindle according to claim 4, in which said holes are arranged so that the said head forms a sprayer head.

6. A spindle according to claim 1, in which said head further comprises holes through which fluid medium can be sucked into the said passage by rotation of the said plate.

7. A spindle as claimed in claim 1, in which the said stationary head further comprises ducts directed towards the spindle axis and permitting compressed air to be delivered injector fashion into the said yarn passage.

8. A spindle according to claim 1, in which the said stationary head further comprises ducts directed away from the spindle axis and permitting compressed air to be delivered injector fashion into the said yarn passage.

9. A spindle according to claim 1, further comprising a pin mounted in the said head and adapted to he slid into the said yarn passage for severing and gripping the yarn.

References Cited by the Examiner UNITED STATES PATENTS 2,025,460 12/1935 Lenk 5758.84 2,156,330 5/1939 Bochmann 57-58.84 2,560,848 7/1951 Cochran 57-58.84 3,120,094 2/1964 Keyser 5713O 3,159,962 12/1964 Franzer 57-5883 FRANK I. COHEN, Primary Examiner.

D. WATKINS, Assistant Examiner. 

1. A DOUBLE TWIST SPINDLE COMPRISING IN COMBINATION A REVOLVABLE PLATE AND A GATHERING DISC CARRIED BY THE SAID PLATE AND HAVING A RADIAL OUTLET FOR THE YARN, AND COMPRISING A BEARING SLEEVE WITH A STATIONARY HEAD FORMING WITH THE REVOLVABLE PLATE AND DISC A YARN PASSAGE, THE UPPER SURFACE OF SAID HEAD FORMING THE BOTTOM OF THE SAID YARN PASSAGE. 